application release , which provides a graphical interface for a visual study of reports in the process of profiling and performance analysis using the kernel subsystem . The program code is written in C++ using Qt and KDE Frameworks 5 libraries, and licensed under GPL v2+.
Hotspot can act as a transparent replacement for the "perf report" command when parsing perf.data files, additionally providing features such as FlameGraph visualization, top utility-style state summary, call statistics aggregation, various sorts, tooltip display, built-in mechanisms search and the ability to display side-by-side metrics for multiple events.
In the new release:
- Significantly accelerated interpretation of profiling data for large and complex applications. For example, the perf.data file generated for Firefox is now parsed an order of magnitude faster.
- Added correct support for parsing files with data compressed using the zstd algorithm, which are created at startup
"perf record -z" and allow you to reduce the size by one or two orders of magnitude. - The time scale has been modernized, which now displays marks on the time axes and unit prefixes when zoomed in.
- Implemented parsing of symbols added by the rustc compiler.
- The perfparser submodule has been updated to improve support for parallelization using the fork call.
Source: opennet.ru